Hanna Instruments PCA 311 User manual

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Instruction Manual
PCA 311, PCA 321, PCA 331
Bromine, pH, Temperature, ORP
Analyzers
www.hannainst.com

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Dear Customer,
Thank you for choosing a Hanna Product.
This instruction manual has been written for the following:
PCA 331 – Bromine, pH, temperature, ORP analyzer.
PCA 321 – Bromine, pH, temperature analyzer.
PCA 311 – Bromine analyzer.
The analyzers have features such as: automatic bromine measurement, pH, temperature
and ORP measurement, bromine and pH dosing regulator, selectable sampling
periods, alarm system, data link through GSM network, user friendly interface,
serial communication through RS485, recorder output, 4-20mA dosing output,
Nema 4X enclosure.
The ordering code for bromine analyzers is:
PCA 3a1-b
a = 1 - Bromine analyzer
2 - Bromine, pH and Temperature analyzer
3 - Bromine, pH, Temperature and ORP analyzer
b = 1 - 115V AC 50-60Hz
2 - 220V AC 50-60Hz
Please read this instruction manual carefully before using the instrument. It will provide
you the necessary information for the correct use of the instrument, as well as a
more precise idea of its versatility.
Hanna Instruments reserves the right to modify the design, construction and appearance
of its products without advance notice.

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TABLE OF CONTENTS
PRELIMINARY EXAMINATION........................................6
GENERAL DESCRIPTION..............................................7
MECHANICAL DIMENSIONS........................................9
FUNCTIONAL DESCRIPTION........................................10
DISPLAY, LEDS AND KEYBOARD...................................11
SPECIFICATIONS.......................................................14
OPERATING DESCRIPTION.........................................16
Bromine measurement ......................................16
Method of analysis ........................................17
pH and temperature measurement ...................17
ORP measurement ........................................17
INITIAL PREPARATION AND INSTALLATION...................18
Installation Personnel......................................18
Location of the Instrument...............................18
Hydraulic Connections....................................18
Installing the Input Filter...................................19
Installing the pH and ORP probes .....................20
Installing the Pump Tubes.................................21
Electrical Connections.....................................22
STARTUP.....................................................................26
USER INTERFACE .......................................................27
Panels organization ........................................ 27
Main panels ............................................... 27
Measure panels ............................................. 28
Messages .................................................... 29
Menu mode ................................................ 29
Password procedure ..................................... 29
Navigating through menu .............................. 30
Modify a parameter ........................................ 30
PROGRAMMING THE ANALYZER .............................. 32
GENERAL SETTINGS ...............................................33

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Changing the password ................................. 33
Setting the language ..................................... 33
Analyzer serial number and software version ...... 33
Time and date ............................................. 33
WORKING MODE ................................................... 34
Automatic mode .......................................... 34
Standby mode ............................................. 34
Manual mode ............................................. 34
Read on demand ........................................... 35
Direct read ................................................. 35
System error relay..............................................35
BROMINE SETTINGS ............................................... 36
Reagent changing .......................................... 36
Measure settings .......................................... 37
Measure info ................................................ 37
Analog output ............................................. 37
Bromine dosing ........................................... 38
Alarms ........................................................ 39
CALIBRATE THE MEASURING CELL ............................. 40
Calibration date and factor ............................ 40
Calibration procedure ..................................... 40
pH SETTINGS (PCA 321, PCA 331) ............................. 41
Measure info............................................... 41
Analog output ............................................. 42
pH dosing .................................................. 42
Alarms ....................................................... 44
pH CALIBRATION (PCA 321, PCA 331) ....................... 44
One point calibration ................................... 45
Two-points calibration ..................................... 46
Process pH calibration .................................... 46
Set default calibration ..................................... 47
TEMPERATURE SETTINGS (PCA 321, PCA 331) ............ 48
Units ......................................................... 48
Measure info .............................................. 48

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Analog output............................................. 48
Alarms ....................................................... 49
ORP SETTINGS (PCA 331) ..........................................50
Measure info .............................................. 50
Analog output ............................................ 50
Alarms ....................................................... 51
ANALOG OUTPUT .................................................. 52
Select the analog output type .......................... 52
Dosing through 4-20 mA output ...................... 52
CALIBRATE THE ANALOG OUTPUT .............................53
Output middle range ........................................54
SYSTEM LOG ..........................................................55
Set log ....................................................... 55
Clear system log .......................................... 55
View log ..................................................... 55
SERIAL COMMUNICATION ........................................ 57
Standard mode ............................................ 57
GSM ..................................................................... 58
GSM mode ................................................ 58
Setting the GSM feature ................................. 58
GSM connection .......................................... 59
Setting SMS feature ......................................... 60
Modem connection.......................................... 64
MAINTENANCE ...................................................... 65
Electrode conditioning and maintenance ........... 66
Changing peristaltic pump tubing .................... 68
Tubing replacement.......................................... 69
Cleaning measurement cell .............................. 69
Cell Cleaning Procedure ................................ 70
ERRORS, ALARMS AND WARNINGS ............................ 71
ACCESORIES ........................................................... 74

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PRELIMINARY EXAMINATION
Remove the analyzer from the packing material and examine
it carefully to make sure that no damage has occurred during
shipping. If there is any noticeable damage, notify your dealer
immediately.
Each analyzer is supplied complete with:
• 2 reagent bottles (1 indicator and 1 buffer solution)
• 2 reagent bottle caps
• 1 DPD compound powder
• tubing
Note: Save all packing materials until you are sure that the
instrument functions correctly. Any damaged or defective items
must be returned in their original packing materials together
with the supplied accessories.
WARNING: The PCA 311 - PCA 331 series of Bromine, pH and ORP
Analyzers are not designed for use with samples that are
inflammable or explosive in nature. If any sample solution
other than water is used with these products, test the sample/
product compatibility to assure user safety and proper product
performance.
Safety Precautions: Please take the time to read the safety precautions
carefully wherever they appear in this manual. They are
provided to prevent personal injury and damage to the
instrument. This safety information applies to the operators
and service personnel and the following two captions are
used:
CAUTION: identifies conditions or practices that could result in
damage to the instrument or persons;
Warning:identifies conditions or practices that could result in personal
injury or loss of life.
Note: Because of the inherent dangers in handling chemical
samples, standards and reagents, HANNA Instruments
strongly recommends the users of this product to review the
Material Safety Data Sheets and become familiar with safe
handling procedures and proper usage prior to handling
any chemicals.

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GENERAL DESCRIPTION
The Hanna PCA 311, PCA 321 and PCA 331 series of
bromine, pH, ORP and temperature analyzers are micro-
processor controlled, process analyzers which continuously
monitor a sample stream for bromine content, pH, ORP
and temperature values.
The PCA 311-331 monitor the bromine in the 0.0 to 10.0 mg/L
range depending on the factory settings and used reagents.
In the DPD Colorimetric method, N, N-Diethyl-p-phenylene-
diamine indicator and a buffer are mixed with the sample.
The resulting chemical reaction causes a magenta color to
form. The color intensity is proportional to the concentration
of bromine. The color intensity is measured photometrically
(with a light beam and a photodetector) and converted to
bromine concentration, in mg/L, which is displayed on the
front panel.
Indicator and buffer reagent bottles are placed directly into
the instrument case. With a sampling period of 5 minutes,
reagents need to be replenished about once a month. The
reagent bottles are easily visible through the transparent
window allowing the operator to check the reagent levels.
PCA 321 and PCA 331 analyzers use a HI 1005 probe to
continuously measure the pH of the sample stream in the range
of 0 to 14 pH. The sample temperature is measured in the 5 to
75°C range. pH and temperature are displayed on the front
panel. pH value is corrected with temperature.
PCA 331 analyzer use HI 2008 platinum ORP electrode to
continuously measure the sample ORP value.
The pH/temperature combined sensor and the ORP sensor
are placed inside the case, directly in the sample stream.
The case of PCA 311-331 analyzers meet NEMA 4X, 12 and

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13 standards. Molded fiberglass polyester has outstanding
chemical and temperature resistance.
The case provides wall mounting capability and door gasket
assures a watertight and dust-tight seal.
The electrical and hydraulic connections are made through
the side of the enclosure.
The front cover is secured with two lockable latches.
Four bromine level setpoints can be adjusted by the operator:
a proportional dosing setpoint, two alarm setpoints and a
minimum level for dosing.
The proportional dosing factor (1/delta) is user selectable with
a delta between 0.2 and 10.0 mg/L (ppm). Bromine dosing
system controls a SPST relay.
Each bromine alarm can be enabled or disabled.
Three pH level setpoints can be adjusted by the operator: a
dosing setpoint and two alarm setpoints. The pH control mode
is user selectable: on/off or proportional dosing.
The proportional dosing factor (1/delta) is user selectable with
a delta between 0.1 and 2 pH . The on/off dosing hysteresis is
user selectable between 0.05 and 2.00 pH. pH dosing system
controls a SPST relay.
Each pH alarm can be enabled or disabled.
For temperature and ORP, two alarm levels can be set by the
user.
Each temperature or ORP alarm can be enabled or disabled.
Alarm condition controls a SPDT relay.
A system error feature provides relay activation to signals need
for operator intervention.
System error condition controls a SPST relay.
Voltage output ranges of 0-10mV, 0-100mV, 0-1V or a
current output of 4-20 or 0-20 mA are available to drive an
external device such as a chart recorder.
The analyzer can drive a proportional dosing pump through
the 4-20 mA output, for bromine or for acid/alkali dosing.
The analog output is fully programmable and could be
proportional with bromine concentration, pH, ORP or
temperature value. The limits of the analog output is
selectable for each parameter.

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The analyzer can store up to 3500 readings (at least 7 days at
3 minutes sampling interval), that are available for consulting
or downloading.
The PCA 311-331 analyzers can be monitored or controlled
through RS485 or GSM network connection.
Errors, alarms and warnings are sent through SMS (using GSM
module HI 504900).
The analyzer state can be interrogated by a simple call using
GSM phone.
Time is displayed on the main panel and a time related
warning system for “Old calibration” “Reagent expired” and
“SIM expired” is available.
The language for user interface can be easily changed without
restarting the analyzer.
MECHANICAL DIMENSIONS
Case dimensions in mm & inches
254
304.8
338.3
389.1
374.8
254
393.7
367.1
209.8
83.1
13.32"
10"
12"
15.32"
3.27"
8.26"
14.76"
15.5"
10"
14.45"
FRONT VIEW
FRONT VIEW
SIDE VIEW
SIDE VIEW
REAR VIEW
REAR VIEW

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FUNCTIONAL DESCRIPTION
1. Alarms, dosing, system error LED’s
2. Character Display
3. Cable glands
4. Keypad
5. Peristaltic Pump
6. Access Point to Cell
7. Measuring Cell
8. Drain Tube
9. Output Port
10. Drain Port Valve
11. Drain Port of Measuring Cell
12. Sample Tubing
13. Buffer Bottle
14. Pressure Regulator Output Port
15. Incoming Pressure Regulator
16. Indicator Bottle
17. Sample Inlet Port
18. pH Electrode (not included)
19. Electrodes Holder
20. Sample Output Port
21. Electrovalve
22. ORP Electrode (not included)
23. Reagent Tubing
24. Line Input